Photometric Sensor for Electrical Testing Stations

Product Specifications

Technical details and manufacturing context for Photometric Sensor

Definition

A photometric sensor within an Electrical Testing Station is a precision optical component that detects, measures, and analyzes light characteristics such as intensity, wavelength, or spectral distribution. It converts optical signals into electrical signals for processing by the testing station's control system, enabling verification of light-emitting components, optical assemblies, or material optical properties during quality control and functional testing. The sensor is designed for integration into automated test systems, providing quantitative data for pass/fail decisions or process control. Its measurement range spans from 0.1 to 200,000 lux, covering typical indoor to bright sunlight conditions, with an accuracy of ±3% full scale at 25°C and 60% RH. The resolution is 0.1 lux, and the spectral response is 400–700 nm, matching the CIE photopic curve. Response time is 0.5–1.0 seconds for 90% of final value. Operating temperature range is -20 to 60°C, storage -40 to 85°C, and supply voltage 12–24 V DC with reverse polarity protection. The output signal is 4–20 mA, linear with illuminance. The housing is rated IP65–IP67 per IEC 60529, dust-tight and protected against water jets, and is made of 316L stainless steel per ASTM A240 for corrosion resistance. Weight is 150–200 g without cable. Materials include a silicon photodiode, optical glass lens, aluminum housing, and copper electrical contacts. The sensor operates by receiving light through an optical input, converting it to an electrical signal, and conditioning it for digital output. Calibration against photometric standards ensures accuracy. For specific applications, verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The photometric sensor operates by receiving incoming light through an optical input (lens, fiber, or window). The light interacts with a photosensitive element (photodiode, phototransistor, or CCD/CMOS array) that generates an electrical current proportional to the light intensity. This signal is then amplified, conditioned, and converted to digital data by integrated circuitry. The sensor may incorporate filters, gratings, or monochromators for spectral analysis, with calibration ensuring accurate measurement against known photometric standards.

Common Materials

Silicon photodiode, Optical glass lens, Aluminum housing, Copper electrical contacts

Technical Parameters

Parameter	Typical range	Notes & selection driver
Measurement Range	0.1–200000 lx	Covers typical indoor to bright sunlight conditions
Accuracy	±3 %	Full scale, at 25°C and 60% RH
Resolution	0.1 lx	Lowest detectable change
Spectral Response	400–700 nm	Visible spectrum, CIE photopic curve
Response Time	0.5–1.0 s	For 90% of final value
Operating Temperature	-20–60 °C	Outside this range accuracy degrades
Storage Temperature	-40–85 °C	Non-condensing environment
Supply Voltage	12–24 V DC	Reverse polarity protected
Output Signal	4–20 mA	Linear with illuminance
IP Rating	IP65–IP67	Dust-tight and protected against water jetsIEC 60529
Housing Material	316L	Stainless steel for corrosion resistanceASTM A240
Weight	150–200 g	Without cable

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Photosensitive Element Part
Converts incoming photons into electrical current through the photoelectric effect

Material: Silicon or InGaAs semiconductor
Optical Window/Lens Part
Transmits and focuses light onto the photosensitive element while protecting internal components

Material: Optical glass or quartz
Signal Conditioning Circuit
Amplifies, filters, and converts the weak photocurrent into a usable electrical signal

Material: Printed circuit board with integrated circuits
Housing Part
Provides mechanical protection, light shielding, and thermal management for the sensor assembly

Material: Anodized aluminum or stainless steel
Optical Filter or Grating Optional
Selects the wavelength band for spectral measurement, on versions fitted with a dispersive element.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Electrical Testing Station

View system integration details

Manufacturers of Photometric Sensor

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Frequently Asked Questions

What is the measurement range of this photometric sensor?

The measurement range is 0.1 to 200,000 lux, covering typical indoor to bright sunlight conditions. However, the actual range for a specific model should be confirmed with the manufacturer.

What output signal does the sensor provide?

The sensor provides a 4–20 mA output signal that is linear with illuminance. This analog signal can be interfaced with control systems for data acquisition.

What is the spectral response of the sensor?

The spectral response is 400–700 nm, matching the CIE photopic curve, which corresponds to the visible spectrum. This makes it suitable for photometric measurements of visible light.

What environmental protection does the housing offer?

The housing is rated IP65–IP67 per IEC 60529, meaning it is dust-tight and protected against water jets. The housing material is 316L stainless steel per ASTM A240 for corrosion resistance.

Data Basis

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Preliminary Technical Classification

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pressure:	0 to 10 bar
other spec:	Light intensity range: 0.1 to 100,000 lux
temperature:	-20°C to 85°C

Photometric Sensor

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards